/Engine/Plugins/Importers/USDImporter/Source/UnrealUSDWrapper/Public/UsdWrappers/UsdPayloads.h
Wrapped pxr::UsdPayloads functions, refer to the USD SDK documentation.
bool AddPayload ( const [FSdfPayload](API\Plugins\UnrealUSDWrapper\UsdWrappers\FSdfPayload) & Payload, [EUsdListPosition](API\Plugins\UnrealUSDWrapper\EUsdListPosition) Position )